Please show work for a better understanding

10:39 AM Tue Dec 1 learnus-east1-prod-f|eet02xythos.content.blackboardcdn.com 3 of 7 Dr. Salsberg creates an intervention that is designed to improve people's memory. She conducts a study in which she tests the memory of a group of 4 participants both before and after she administers the intervention. The data from the study is in the table below. Assume that higher numbers mean better memory performance (i.e., they remember more things). a.) Calculate the appropriate t-test based these data. b.) Do we retain or reject the null hypothesis? c.) Is the p-value associated with this result greater than or less than .05? d.) Is the result statistically signicant? e.) Based on the results, did the intervention appear to improve memory? (Assume tcrit = i2.78) (11 points) Subject Pre Post Number Intervention Intervention 1 4 1o 2 3 8 3 4 9 4 7 7